Liquid fuel range



Sept- 7, 1954 w. L. GAPPA ETAL LIQUID FUEL RANGE 2 Sheets-Sheet 1 Original Filed-July 30. 1949 FIG. I,

INVENTORS. William L Gappa By Chrisfian E. Buerki way ATTORNEY p 1954 w. L. GAPPA ETAL LIQUID FUEL RANGE 2 Sheets-Sheet 2 Original Filed July 30, 1949 j O (D N N) INVENTORS. William L. Gappa y Chrish'an E. Buerk ATTORNEY Patented Sept. 7, 1954 LIQUID FUEL RANGE William L. Gappa, West Allis, and Christian E.

Buerki, Milwaukee, Wis.,

assignors to A. J.

Lindemann & Hoverson Company, Milwaukee, W1s., a corporation of Wisconsin Original application July 30, 1949, Serial No. this application February 107,794. Divided and 17, 1950, Serial No. 14

. 1 Claim." (01. 158-42) This application is a division of our application SerialNumber'107,794, filed July 30, 1949, for Liquid Fuel Ranges now Patent No. 2,625,991 issued January 20, 1953.

The improvements relate tovliquid fuel stoves and ranges in which liquid hydrocarbon fuel is usually employed, and more particularly to the burners and fuel distribution and control of the oven thereof, whereby the operation of the burners is controlled by gravity control of the fluid and without the intervention of valves or the like, the burners being of the wickless type and their combustion being started, regulated and extinguished by adjustment of the level of the fuel which is in turn controlled by manipulation of the parts through which it is supplied and of the burners which comprise the usual annular oil trough with lighting ring surmounted by the concentric perforated blue flame combustion cylinders or "cones or other Combustion devices well known in the art.

The objects and purposes of the improvements, among others, are to prduce, a more eflicient, safe and durable stove or range construction of the type referred to of simple and strong construction and accurate, convenient and dependable operation, and to reduce the cost of manufacture in materials, labor and fabricating operations. Other objects, purposes and advantages will be apparent from the following description and accompanying drawings forming a part hereof and referred to therein.

In the said drawings:

Fig. 1 is a top plan view of the oven burner assembly and oil reservoir with the burner shown in dotted line lighting position;

Fig. 2 is a front elevation of the oven burner shown in plan in Fig. 1 and with dotted line detail of a burner control cam device such as is used in all the burner fuel controls in the invention;

Fig. 3 is a side elevation of the oven burner oil reservoir with certain accessories;

Fig. 4 is a side elevation of the oven burner and stringer pipe, with the stringer pipe shown in dotted line lighting position, and with burner control.

Referring particularly to Figs. 1 through 4. The device has an upper reservoir 44, lower atmosphere pressure container 43 and outlet orifices 3 and 4'. To the base of the reservoir 43, which is intended to be located centrally in a range, is welded a cross rod 45 having narrowed end portions to form a bearing 46 and shoulders 41. These bearings are set into slots 48 cut into angular upstanding arms 49 which are attached to a reenforcing channel cross piece 50 adapted to be mounted within the frame of a range by any suitable means such as self tapping screws 5|.

The cross rod 45 is welded to the reservoir 43 as mentioned above, and the feed pipe 52 is flattened to form a semi-circle as at 53 and indented at 54 to receive the cross rod 45 which is welded thereto at this point to form a tight closure. The end of the feed pipe 52 is collapsed and sealed by welding as at 55, its opposite end being closed by a stopper nut or cap 56. Close to the stopper cap 56 an oven burner 340 is welded directly to the feed pipe 52. The feed pipe 52 rests loosely in a depression 51 in a lifting U bar 58 which at the rear of the bottom frame member of the burner compartment I0 is hinged in any suitable manner as at 59 and at the oven front end the bar 58 is formed into an L as shown at 60 and has a fulcrum pin 6| fixed to the upper end of the L portion by bolting or other suitable means, this fulcrum is held in a cam slot 25 whose convolutions form a. spiral cam in a cam disk 26 at the center of which is rigidly fixed an outwardly extending drive rod 2! which passes through a bearing hole 28 in the indicator plate 28a welded or otherwise aflixed to the base frame member l0 by means of the bolts or self tapping screws 29. The fulcrum pin 6| also passes through the indicator plate 28a and is held in a vertical slot 30 so that when the fulcrum pin 6| follows the convolutions of the cam slot, when the cam disk 26 is turned by means of the knob 33, it may only travel up and down in a vertical direction being restrained from lateral movement by slot 30. The raising and lowering of fulcrum pin 6| thus raises and lowers the bar 58 and the burner 340 which rests on the said bar.

The operation of the oven burner is as follows:

When it is desired to light the oven burner the indicator knob is turned to light position which raises the oil level in the burner 340 by the fulcrum 6| being lowered by the convolutions 25 in the cam plate 26, thus lowering the lifting bar 58 hinged at 59. The burner 340 is now pulled forward out of the notch 51 to the front of the frame member [0, and this may be done because the bearings 46 have horizontal oscillating movement in the slots 48, as shown in dotted lines in Fig. 2. When pulled forward the burner may be lit from the front of the range, but it will be noted that the lifting of the burner 340 from the notch 51 has again lowered the level of the oil in its trough to a point where the burner will not stay lighted, in this position,

but will quickly burn out, thus avoiding damage to the front of the stove if the burner 340 is carelessly left in its forward position. It is therefore necessary after lighting to return the burner to the notch 51 in order that oil be properly fed into the burner from the reservoir;

The adjustment of flame in the burner is accomplished by raising and lowering the burner by means of the bar 58, and fulcrum pin 5| being raised or lowered in accordance with the degree of turning of the knob 33 it being understood that the indicator plate 28a hasetched or painted on its face indicator words such as low, medium and "high for indication of flame height. When the bar 58 is thus raised or lowered the feed conduit 52 from the reservoir to the burner is canted slightly on the pivots 46 in the slots 48 by the vertical movement of the bar 58 on its hinge, thus raising or lowering the oven burner with respect to the maintained oil level ofthe reservoir.

Various changes in the details of construction and arrangement herein described and shown may be made without departing from the scope and purport of the improvements.

What we claim is:

In a device of the character described, a liquid fuel reservoir having a maintained liquid level therein, a horizontal pivot on which said reservoir is fixed to rock in a vertical plane, a support on which said pivot is positioned to rock, said support having elongated horizontal recesses in which said pivot is permitted to swing in a horizontal plane, a lower horizontal support adapted to be incorporated in the frame of a range on which said support is fixed intermediate the ends thereof, a burner trough positioned in spaced relation to the reservoir, a rigid liquid conduit connecting said trough. and reservoir and fixed to both, a support adjacent the trough on which said conduit is slidably supported to swing laterally with the trough and swing the pivot in the said recesses, a bottom member adapted to be incorporated in such a range frame with which said conduit support is hingedly connected to move vertically to raise and lower said trough with respect to the-reservoir and liquid level and means for so moving said conduit support and trough and retaining them in various positions to which they may be moved, said movable conduit support having a depression intermediate its ends in which the conduit is normally retained by gravity.

References Cited in. the file. of this patent UNITED STA'IES' PATENTS Number Name Date 870,821 Hall Nov. 12, 1907 1,060,458 Kelly Apr. 29, 1913 1,150,620 Phillips Aug. 17, 1915 1,488,854 White Apr. 1, 1924 1,541,475 Coppock Sept. 6, 1927 2,003,413 Allyne June 4, 1935 FOREIGN PATENTS Number Country Date 405,560 Great Britain Feb. 8, 1934 

